Untay, Abegail P., Ma. Theresa C. Cayabyab, Anna Clarice Yanday, and Hazel Mae R. Diza. 2020. “Image Enhancement and Filters Using Fourier Transformation”. Asian Journal of Multidisciplinary Studies 3 (2). https://ajms.pti.edu.ph/online/index.php/ajms/article/view/477.